Substances are given: phosphorus (V) oxide, potassium hydroxide, nitric acid, calcium oxide
| July 13, 2021 | education
Substances are given: phosphorus (V) oxide, potassium hydroxide, nitric acid, calcium oxide. Write the equations of possible reactions between given substances, taken in pairs.
1. P2O5 + 6KOH = 2K3PO4 + 3H2O, the result is potassium orthophosphate (otherwise potassium phosphate) and water.
2. P2O5 + 2HNO3 = 2HPO3 + N2O5, the result is metophosphoric acid and nitric oxide.
3. P2O5 + 3CaO = Ca3 (PO4) 2, the result is calcium phosphate.
4. KOH + HNO3 = KNO3 + H2O, the result is potassium nitrate and water.
5. CaO + 2KOH = K2O + Ca (OH) 2, the result is potassium oxide and calcium hydroxide.
6. CaO + 2HNO3 = Ca (NO3) 2 + H2O, the result is calcium nitrate and water.
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